Unity: Camera streaming app for Nreal Light Glasses

I need an android app that allow to choose between different Audio and Video sources (e.g. the Phones Audio/ Video, Nreal`s and any devices that might be connected to the Phone, like headphones). The chosen Audio/ Video signal can then in best case streamed to another PC/ Phone/ Tablet directly (via Browser???), or at least shown on the phone screen (so I could have a Skype/ Teams call, share my screen and then open the “Camera streaming app for Nreal Light Glasses”. I tried several OTG Cam apps from the store, but all crash when try to connect to the Nreal. A specific Nreal SDK is available at Nreal.io